adding true double puppet functionality

Currently the framework does not support puppeting the matrix user, that is being bridged.

That means that using the framework also involves keeping track of an additonal matrix client/api in order to puppet this user as well. It also requires own code to decide in which way an event is supposed to be handled - either relaying the message via the framework (relay_service_message) or relaying it as the real user (again, having to write own code for submitting messages and room events via the matrix api since the framework cannot masquerade a user not in the user-namespace).

Do you have any plans or ideas regarding this already ?